138596026 has 16 divisors (see below), whose sum is σ = 211903848. Its totient is φ = 67968000.

The previous prime is 138596011. The next prime is 138596027. The reversal of 138596026 is 620695831.

It can be written as a sum of positive squares in 4 ways, for example, as 116964225 + 21631801 = 10815^2 + 4651^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 138596026.

It is not an unprimeable number, because it can be changed into a prime (138596027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47506 + ... + 50338.

Almost surely, 2^138596026 is an apocalyptic number.

138596026 is a deficient number, since it is larger than the sum of its proper divisors (73307822).

138596026 is a wasteful number, since it uses less digits than its factorization.

138596026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3297.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 138596026 is about 11772.6813428377. The cubic root of 138596026 is about 517.5078309472.

The spelling of 138596026 in words is "one hundred thirty-eight million, five hundred ninety-six thousand, twenty-six".